MEGA Jennifer Aniston’s reflections on her past relationships and career moments have raised eyebrows. According to a new report, the actress’s comments about ex-husband Brad Pitt may have caused tension in her relationship with Jim Curtis. Jennifer Aniston discussed Pitt and other “Friends” guest stars during a recent interview, but sources claim Curtis feels uneasy about her revisiting that chapter of her life. Jennifer Aniston’s Reflections O…